They're a PartoftheWelshMythAccordingtoanancientlore, twochildrenwhowereoutinthefieldstendingtotheirfamily's cattlestumbledupon a coupleofpuppiesthattheytookhome.
Theirparentstoldthechildrenthatthepupswere a giftfromthefairiesthatlivedinthefieldsandthatthefairiesusedthemtopullcarriagesandsometimestorideintobattles.